Variations in the relative anisotropy of the muon flux during Forbush decreases, according to the URAGAN muon hodoscope data

Abstract

The results from analyzing the muon snapshots (muonographs) obtained for Forbush decreases (FDs) registered by the URAGAN muon hodoscope are presented. Such snapshots provide information on the spatial-angular dynamics of an increase or decrease in the muon flux intensity for different zenith and azimuth angles. A correlation analysis of projections of the vectors of the relative muon flux anisotropy to the south and east, including various stages of FD development, is used for a quantitative description of the variation in the angular distribution of the muon flux during an FD.